42223623 has 32 divisors (see below), whose sum is σ = 64478400. Its totient is φ = 24385536.

The previous prime is 42223619. The next prime is 42223637. The reversal of 42223623 is 32632224.

It is a happy number.

It is not a de Polignac number, because 42223623 - 2² = 42223619 is a prime.

It is a super-2 number, since 2×42223623² = 3565668678492258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42223593 and 42223602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42223663) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41343 + ... + 42351.

It is an arithmetic number, because the mean of its divisors is an integer number (2014950).

Almost surely, 2^42223623 is an apocalyptic number.

42223623 is a deficient number, since it is larger than the sum of its proper divisors (22254777).

42223623 is a wasteful number, since it uses less digits than its factorization.

42223623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1091.

The product of its digits is 3456, while the sum is 24.

The square root of 42223623 is about 6497.9706832210. The cubic root of 42223623 is about 348.2184930578.

Adding to 42223623 its reverse (32632224), we get a palindrome (74855847).

The spelling of 42223623 in words is "forty-two million, two hundred twenty-three thousand, six hundred twenty-three".